﻿// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "UnityShadersBook/Chapter05/SimpleShader"
{
    Properties
    {
        _Color( "Color Tint", Color) = (1.0,1.0,1.0,1.0)
    }

    SubShader
    {
        pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            
            fixed4 _Color;

            struct a2v 
            {
                float4 vertex : POSITION;
                float3 normal :NORMAL;
                float4 texcoord : TEXCOORD0;
            };

            struct v2f
            {
                float4 pos : SV_POSITION;
                fixed3 color : COLOR0;
            };

            v2f vert( a2v v ) 
            {
                v2f o ;
                o.pos = UnityObjectToClipPos( v.vertex );
                o.color = v.normal * 0.5 + fixed3( 0.5,0.5,0.5 );
                 //o.color = v.normal;
                return o;
            }

            fixed4 frag( v2f i ) : SV_TARGET 
            {
                fixed3 c = i.color;
                
                c *= _Color.rgb;
                return fixed4( c, 1.0 );
            }
            ENDCG
        }
    }
}
